Waddell’s De Pontibus, a Pocket-book for Bridge Engineers 16mo, morocco, 3 00 Specifications for Steel Bridges 12mo, 1 25 Wood’s Treatise on the Theory of the Construction of Bridges and Roofs 8vo, 2 00 Wright’s Designing of Draw-spans: Part I.--Plate-girder Draws 8vo, 2 50 Part II.--Riveted-truss and Pin-connected Long-span Draws 8vo, 2 50 Two parts in one volume 8vo, 3 50 =HYDRAULICS.= Bazin’s Experiments upon the Contraction of the Liquid Vein Issuing from an Orifice. (Trautwine.) 8vo, 2 00 Bovey’s Treatise on Hydraulics 8vo, 5 00 Church’s Mechanics of Engineering 8vo, 6 00 Diagrams of Mean Velocity of Water in Open Channels paper, 1 50 Coffin’s Graphical Solution of Hydraulic Problems 16mo, morocco, 2 50 Flather’s Dynamometers, and the Measurement of Power 12mo, 3 00 Folwell’s Water-supply Engineering 8vo, 4 00 Frizell’s Water-power 8vo, 5 00 Fuertes’s Water and Public Health 12mo, 1 50 Water-filtration Works 12mo, 2 50 Ganguillet and Kutter’s General Formula for the Uniform Flow of Water in Rivers and Other Channels. (Hering and Trautwine.) 8vo, 4 00 Hazen’s Filtration of Public Water-supply 8vo, 3 00 Hazlehurst’s Towers and Tanks for Water-works 8vo, 2 50 Herschel’s 115 Experiments on the Carrying Capacity of Large, Riveted, Metal Conduits 8vo, 2 00 Mason’s Water-supply. (Considered Principally from a Sanitary Standpoint.) 3d Edition, Rewritten 8vo, 4 00 Merriman’s Treatise on Hydraulics. 9th Edition, Rewritten 8vo, 5 00 * Michie’s Elements of Analytical Mechanics 8vo, 4 00 Schuyler’s Reservoirs for Irrigation, Water-power, and Domestic Water-supply Large 8vo, 5 00 ** Thomas and Watt’s Improvement of Riyers. (Post., 44 c. additional), 4to, 6 00 Turneaure and Russell’s Public Water-supplies 8vo, 5 00 Wegmann’s Design and Construction of Dams 4to, 5 00 Water-supply of the City of New York from 1658 to 1895 4to, 10 00 Weisbach’s Hydraulics and Hydraulic Motors. (Du Bois.) 8vo, 5 00 Wilson’s Manual of Irrigation Engineering Small 8vo, 4 00 Wolff’s Windmill as a Prime Mover 8vo, 3 00